Compilare: user.cpp: In function ‘int main()’: user.cpp:50:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&n,&m); ^ user.cpp:56:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a[i][j]); ^ user.cpp:87:23: warning: ‘ox’ may be used uninitialized in this function [-Wmaybe-uninitialized] v=a[oy][ox]; ^ user.cpp:87:23: warning: ‘oy’ may be used uninitialized in this function [-Wmaybe-uninitialized]